In the second revised edition of the successful book "Regional Development", author Serafeim Polyzos improves and enriches the content while maintaining the original structure of the volume. Specifically, in its new edition, the material incorporates the new developments that have occurred in the last decade in Greek and international literature. Additionally, the statistical data regarding regional inequalities and the characteristics of inequalities in Greece and Europe have been updated. Finally, the book is printed in color, ensuring the best representation of the diagrams and making reading enjoyable and efficient.